Microphone unit



FIG. 1 is a front, top and right perspective view of a microphone unit showing our new design;

FIG. 2 is a rear, bottom and left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof, a left side view thereof being a mirror image;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental designs for a microphone unit, as shown and described. 